EP0956824A1 - Instrument comprising a shaft for insertion into the medullary canal and a handle - Google Patents

Instrument comprising a shaft for insertion into the medullary canal and a handle Download PDF

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Publication number
EP0956824A1
EP0956824A1 EP99107504A EP99107504A EP0956824A1 EP 0956824 A1 EP0956824 A1 EP 0956824A1 EP 99107504 A EP99107504 A EP 99107504A EP 99107504 A EP99107504 A EP 99107504A EP 0956824 A1 EP0956824 A1 EP 0956824A1
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EP
European Patent Office
Prior art keywords
shaft
handle
pin
rod
handle part
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP99107504A
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German (de)
French (fr)
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EP0956824B1 (en
Inventor
Arnold Keller
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Waldemar Link GmbH and Co KG
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Waldemar Link GmbH and Co KG
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Publication of EP0956824A1 publication Critical patent/EP0956824A1/en
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/1659—Surgical rasps, files, planes, or scrapers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/1662—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body
    • A61B17/1664—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body for the hip
    • A61B17/1668—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body for the hip for the upper femur
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/0046—Surgical instruments, devices or methods, e.g. tourniquets with a releasable handle; with handle and operating part separable

Definitions

  • the medullary cavity is opened and according to the shape of the shaft to be inserted and be shaped. This is done with a rasp, the Shaft resembles the shape of the prosthetic socket. The top The end of the rasp corresponds to the resection level.
  • a shaft the direction of which is that of the head neck matches a rasping tool for finishing the resection surface can be put on (EP-B 166 085) or a trial joint head can be attached. The same applies to a trial team. Often it serves Rasp at the same time as an experimental group.
  • the coupling parts for connecting the shaft to the handle part on the one hand include the pin described above at the upper end of the shaft and on the other hand on the handle part this pin receiving bore. Because the peg in the head and neck direction runs, it protrudes sideways from the shaft (based on its central longitudinal direction) away from it. So that the lower end of the handle part receives the pin can, it is generally opposite to the other direction of the handle part also angled accordingly. It follows yourself that the handle part mostly a little sideways offset from the shaft, albeit essentially parallel to the longitudinal direction of the shaft.
  • Coupling parts comprise means for locking the pin in the hole to connect the shaft and handle secure for use. These locking means are releasable so that the handle part can be removed from the pin can.
  • the known locking means leave something to be desired. If they have a spring-loaded latch that fits into a wedge-shaped groove of the pin engages (EP-A-380149, US-A-5089003) the bolt can deflect against the spring force; the Locking is unsafe.
  • Another known instrument (DE-C 196 31 984) must be used to couple the shaft with the Handle part S-shaped engagement members of these two parts with each other be engaged, their interaction is secured by a sleeve to be pushed over it.
  • the invention has for its object an instrument described and specified in the preamble of claim 1 Kind in terms of safe functioning, easy usability outside the immediate wound area and / or slight Improve cleaning. This is achieved through the characteristics of the Claim 1.
  • the rod guided movably in the longitudinal direction of the handle part is connected to a handle at its upper end. This can be provided at the distal end of the handle part and is easily accessible during the operation the wound.
  • the rod engages in the Locking position through a hole in the pin. Therefore can even if between the handle and the Shaft high forces act, none of the rod from the locking position outward forces are caused.
  • the rod is on both sides of the hole provided in the pin through the Supported guide hole provided in the handle part. He can therefore absorb high forces that are safe on the body of the Handle part are transferred.
  • To secure the rod in the Locking position is a locking device on the handle intended.
  • the rod is expediently located in a hole which is open at the bottom of the coupling part led to for cleaning purposes can be easily removed. For this purpose he loosened from his handle, for example unscrewed. It is expediently open above the coupling part, to make cleaning easier. It can be from one groove open towards the side of the handle part must be accommodated, which essentially takes up its entire cross-section, so the handle part gripped and used regardless of the rod can be.
  • the rasp 1 is connected to a handle part 2.
  • the rasp 1 includes a shaft 9 which is in the medullary canal of the proximal Thigh bone is to be used. It ends up in one flat surface 3, which is oblique to the longitudinal direction of the shaft 9 stands. From this surface 3 rises approximately vertically and thus also oblique in relation to the longitudinal direction of the shaft 9 a pin 4.
  • the handle part 2 consists of an elongated handle 5, which runs approximately parallel to the longitudinal direction of the rasp shaft 9 and is slightly offset to the side. It runs down into a coupling part 6, which accordingly the oblique direction of the pin 4 obliquely with respect to Handle 5 of the handle part and the shaft 9 of the rasp 1 runs.
  • the coupling part 6 contains a bore 7 which receives the pin 4 suitably. The diameter of the bore 7 is slightly larger than that of the pin 4 so that it can be easily inserted into the bore lets, but still a good clutch guide is.
  • the handle part 2 carries an anvil 8, the top and Striking surfaces on the underside form for driving in and out the rasp shaft 9 from the bone.
  • the rod serves to lock the pin 4 in the bore 7 10, which is in alignment in the coupling part 6 of the handle part 2 Bores 11, 12 out above and below the bore 7 is.
  • Above the coupling part 6 in the area of the handle 5 it is, as indicated by cross-sectional representation at 13, in an outwardly open groove 14 of the handle. His top
  • the end is screwed into a slide 16 at 15 between the flanks 17, 18 of a handle opening 19 in the longitudinal direction of the handle 5 is guided.
  • the slider 16 forms the Handle for longitudinal displacement of the rod 10.
  • the pin 4 of the Rasp 1 contains one in the inserted state with the holes 11, 12 aligned pin bore 20. In the shown in Fig. 2 Position extends through the lower end of the rod 10 this bore 20 and thereby locks it in the bore 7.
  • the slide 16 does not inadvertently the locking position or can leave the released position, he is with a Provide locking device.
  • a trigger on the slide 16 23 mounted around the pivot point 24 and by a spring 25 in Counterclockwise applied so that its in the drawing back on the right on the flank 18 of the grommet 19 creates.
  • a projection 26 which has a latching opening 27 interacts, which denotes the locking position.
  • a further latching opening 28 can be made be provided, which is assigned to the released position.
  • the bore 12 is open at the bottom.
  • the rod 10 is in its end face with a screwdriver slot 29 or provided the like in order to enable the attachment of a tool, with the help of his screw 15 with the Slider 16 is released.
  • the rod 10 and the slider 16 can then easily separated from the handle part 2 for cleaning purposes become.

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  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biomedical Technology (AREA)
  • Medical Informatics (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Dentistry (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Prostheses (AREA)
  • Surgical Instruments (AREA)

Abstract

The surgical instrument comprises a shaft (9) for insertion into the femur, and a handle (2) which is approx. parallel to the direction of the shaft, and has its top end releaseably connected to a double sided coupling piece. On the top end (3) of the shaft a spigot (4) lies at an angle to the shaft and a hole (7) on the handle provides a releasable connection for the spigot. A rod (10) is passed through an open hole (12) in the handle.

Description

Bevor der Schaft einer Hüftprothese in den Markraum des proximalen Oberschenkelknochens eingesetzt werden kann, muß nach der Resektion des Kopfhalses der Markraum geöffnet und entsprechend der Form des einzusetzenden Schafts ausgeräumt und geformt werden. Dies geschieht mit einer Raspel, deren Schaft der Gestalt des Prothesenschafts gleicht. Das obere Ende der Raspel entspricht der Resektionsebene. Darauf erhebt sich ein Schaft, dessen Richtung mit derjenigen des Kopfhalses übereinstimmt, damit ein Raspelwerkzeug zur Endbearbeitung der Resektionsfläche aufgesetzt werden kann (EP-B 166 085) oder ein Probegelenkkopf aufgesetzt werden kann. Ähnliches gilt für einen Versuchsschaft. Häufig dient die Raspel gleichzeitig als Versuchsschaft.Before the shaft of a hip prosthesis enters the medullary canal proximal femur can be used after resection of the head neck, the medullary cavity is opened and according to the shape of the shaft to be inserted and be shaped. This is done with a rasp, the Shaft resembles the shape of the prosthetic socket. The top The end of the rasp corresponds to the resection level. Thereupon a shaft, the direction of which is that of the head neck matches a rasping tool for finishing the resection surface can be put on (EP-B 166 085) or a trial joint head can be attached. The same applies to a trial team. Often it serves Rasp at the same time as an experimental group.

Es ist bekannt (DE-U 9407621, US-A-4990149=EP-A-380309, US-A-5089003), zum Einsetzen und Lösen des Schafts einen Griffteil vorzusehen, der über Kupplungsteile lösbar mit dem Schaft verbunden werden kann. Er verläuft im wesentlichen etwa parallel zur Richtung des Schafts , damit Hammerschläge auf sein als Amboß ausgebildetes Ende zum Eintreiben oder Herausziehen des Schafts etwa in Längsrichtung des Schafts auf diesen wirken.It is known (DE-U 9407621, US-A-4990149 = EP-A-380309, US-A-5089003), a handle for inserting and releasing the shaft to provide the detachable coupling parts with the shaft can be connected. It runs essentially parallel to the direction of the shaft so that hammer blows are on end formed as an anvil for driving in or pulling out of the shaft act approximately in the longitudinal direction of the shaft.

Die Kupplungsteile zum Verbinden des Schafts mit dem Griffteil umfassen einerseits den weiter oben beschriebenen Zapfen am oberen Ende des Schafts und andererseits am Griffteil eine diesen Zapfen aufnehmende Bohrung. Da der Zapfen in Kopf-Hals-Richtung verläuft, ragt er schräg seitlich vom Schaft (bezogen auf dessen mittlere Längsrichtung) von diesem weg. Damit das untere Ende des Griffteils den Zapfen aufnehmen kann, ist es im allgemeinen gegenüber der sonstigen Richtung des Griffteils ebenfalls entsprechend abgewinkelt. Daraus ergibt sich, daß der Griffteil überwiegend ein wenig seitlich versetzt gegenüber dem Schaft verläuft, wenn auch im wesentlichen parallel zur Längsrichtung des Schafts.The coupling parts for connecting the shaft to the handle part on the one hand include the pin described above at the upper end of the shaft and on the other hand on the handle part this pin receiving bore. Because the peg in the head and neck direction runs, it protrudes sideways from the shaft (based on its central longitudinal direction) away from it. So that the lower end of the handle part receives the pin can, it is generally opposite to the other direction of the handle part also angled accordingly. It follows yourself that the handle part mostly a little sideways offset from the shaft, albeit essentially parallel to the longitudinal direction of the shaft.

Die bei den bekannten Instrumenten dieser Art vorgesehenen Kupplungsteile umfassen Mittel zum Arretieren des Zapfens in der Bohrung, um die Verbindung zwischen Schaft und Griffteil für die Benutzung zu sichern. Diese Arretiermittel sind lösbar, damit der Griffteil von dem Zapfen abgenommen werden kann. Die bekannten Arretiermittel lassen zu wünschen übrig. Wenn sie einen federbelasteten Riegel aufweisen, der in eine keilförmige Nut des Zapfens eingreift ( EP-A-380149, US-A-5089003) kann der Riegel gegen die Federkraft ausweichen; die Arretierung ist unsicher. Bei einem anderen bekannten Instrument (DE-C 196 31 984) müssen zum Kuppeln des Schafts mit dem Griffteil S-förmige Eingriffsglieder dieser beiden Teile miteinander in Eingriff gebracht werden, deren Zusammenwirken durch eine darüberzuschiebende Hülse gesichert wird. Das hat den Nachteil, daß die Kupplungs- und Arretierungsmittel mit Mühe in der Tiefe der Wunde befestigt werden müssen. Bei einer wieder anderen Kupplungseinrichtung (Prospekt "Das PCA-Hüft-Total-System" der Firma Howmedica Kiel) ist zwar ein an den Kupplungseinrichtungen angreifender Hebel außerhalb der Operationswunde bewegbar; jedoch ist die Hebelbewegung sehr ausladend, was unter den beengten Platzverhältnissen des Operationsfeldes nachteilig ist. Schließlich haben die meisten bekannten Instrumente der geschilderten Art den Nachteil, daß ihre Kupplungseinrichtungen kompliziert sind und sie deshalb schwer zu reinigen sind.The provided in the known instruments of this type Coupling parts comprise means for locking the pin in the hole to connect the shaft and handle secure for use. These locking means are releasable so that the handle part can be removed from the pin can. The known locking means leave something to be desired. If they have a spring-loaded latch that fits into a wedge-shaped groove of the pin engages (EP-A-380149, US-A-5089003) the bolt can deflect against the spring force; the Locking is unsafe. Another known instrument (DE-C 196 31 984) must be used to couple the shaft with the Handle part S-shaped engagement members of these two parts with each other be engaged, their interaction is secured by a sleeve to be pushed over it. That has the disadvantage that the coupling and locking means with Effort must be fastened in the depth of the wound. At a yet another coupling device (brochure "The PCA total hip system" from Howmedica Kiel) is an on the clutch engaging lever outside the Surgical wound movable; however the leverage is very expansive, what under the cramped space of the operating field is disadvantageous. After all, most have known instruments of the type described have the disadvantage that their coupling devices are complicated and therefore they are difficult to clean.

Der Erfindung liegt die Aufgabe zugrunde, ein Instrument der geschilderten und im Oberbegriff des Anspruchs 1 angegebenen Art im Hinblick auf sichere Funktion, einfache Bedienbarkeit außerhalb des unmittelbaren Wundbereichs und/oder leichte Reinigung zu verbessern. Dies gelingt durch die Merkmale des Anspruchs 1.The invention has for its object an instrument described and specified in the preamble of claim 1 Kind in terms of safe functioning, easy usability outside the immediate wound area and / or slight Improve cleaning. This is achieved through the characteristics of the Claim 1.

Der in Längsrichtung des Griffteils beweglich geführte Stab ist an seinem oberen Ende mit einer Handhabe verbunden. Diese kann am schaftfernen Ende des Griffteils vorgesehen sein und liegt damit während der Operation leicht zugänglich fern von der Wunde. Der Stab greift mit seinem schaftnahen Ende in der Arretierstellung durch eine Bohrung des Zapfens hindurch. Daher können auch dann, wenn zwischen dem Griffteil und dem Schaft hohe Kräfte wirken, keine den Stab aus der Arretierstellung herausdrängenden Kräfte verursacht werden. Der Stab ist beiderseits der im Zapfen vorgesehenen Bohrung durch die im Griffteil vorgesehene Führungsbohrung abgestützt. Er kann daher hohe Kräfte aufnehmen, die sicher auf den Körper des Griffteils übertragen werden. Zur Sicherung des Stabs in der Arretierstellung ist an der Handhabe eine Rasteinrichtung vorgesehen. The rod guided movably in the longitudinal direction of the handle part is connected to a handle at its upper end. This can be provided at the distal end of the handle part and is easily accessible during the operation the wound. The rod engages in the Locking position through a hole in the pin. Therefore can even if between the handle and the Shaft high forces act, none of the rod from the locking position outward forces are caused. The rod is on both sides of the hole provided in the pin through the Supported guide hole provided in the handle part. He can therefore absorb high forces that are safe on the body of the Handle part are transferred. To secure the rod in the Locking position is a locking device on the handle intended.

Zweckmäßigerweise wird der Stab in einer unten offenen Bohrung des Kupplungsteils geführt, um zu Reinigungszwecken leicht herausgenommen werden zu können. Zu diesem Zweck wird er von seiner Handhabe gelöst, beispielsweise abgeschraubt. Oberhalb des Kupplungsteils liegt er zweckmäßigerweise offen, um dadurch die Reinigung zu erleichtern. Er kann von einer zur Seite des Griffteils hin offenen Nut aufgenommen sein, die im wesentlichen seinen gesamten Querschnitt aufnimmt, damit der Griffteil ohne Rücksicht auf den Stab gefaßt und benutzt werden kann.The rod is expediently located in a hole which is open at the bottom of the coupling part led to for cleaning purposes can be easily removed. For this purpose he loosened from his handle, for example unscrewed. It is expediently open above the coupling part, to make cleaning easier. It can be from one groove open towards the side of the handle part must be accommodated, which essentially takes up its entire cross-section, so the handle part gripped and used regardless of the rod can be.

Die Erfindung wird im folgenden näher unter Bezugnahme auf die Zeichnung erläutert, die ein vorteilhaftes Ausführungsbeispiel veranschaulicht. Es zeigen:

Fig. 1
eine Gesamtdarstellung in verkleinertem Maßstab und
Fig. 2
die wesentlichen Teile in etwa natürlichem Maßstab.
The invention is explained in more detail below with reference to the drawing, which illustrates an advantageous embodiment. Show it:
Fig. 1
an overall view on a smaller scale and
Fig. 2
the essential parts on an approximately natural scale.

Die Raspel 1 ist verbunden mit einem Griffteil 2. Die Raspel 1 umfaßt einen Schaft 9, der in den Markkanal des proximalen Oberschenkelknochens einzusetzen ist. Er endet oben in einer ebenen Fläche 3, die schräg zur Längsrichtung des Schafts 9 steht. Von dieser Fläche 3 erhebt sich etwa lotrecht und also ebenfalls schräg im Verhältnis zur Längsrichtung des Schafts 9 ein Zapfen 4.The rasp 1 is connected to a handle part 2. The rasp 1 includes a shaft 9 which is in the medullary canal of the proximal Thigh bone is to be used. It ends up in one flat surface 3, which is oblique to the longitudinal direction of the shaft 9 stands. From this surface 3 rises approximately vertically and thus also oblique in relation to the longitudinal direction of the shaft 9 a pin 4.

Der Griffteil 2 besteht aus einem langgestreckten Griff 5, der zur Längsrichtung des Raspelschafts 9 etwa parallel verläuft und diesem gegenüber ein wenig seitlich versetzt ist. Er läuft unten in einen Kupplungsteil 6 aus, der entsprechend der Schrägungsrichtung des Zapfens 4 schräg gegenüber dem Griff 5 des Griffteils und dem Schaft 9 der Raspel 1 verläuft. Der Winkel zwischen dem Zapfen 4 und dem Kupplungsteil 6 einerseits und der Längsrichtung des Raspelschafts 9 und des Griff 5 des Griffteils 2 andererseits entspricht dem CCD-Winkel der zugehörigen Prothese und liegt daher in derselben Größenordnung wie übliche CCD-Winkel. Der Kupplungsteil 6 enthält eine Bohrung 7, die den Zapfen 4 passend aufnimmt. Der Durchmesser der Bohrung 7 ist wenig größer als derjenige des Zapfens 4, so daß sich dieser leicht in die Bohrung einsetzen läßt, aber dennoch eine gute Kupplungsführung gegeben ist.The handle part 2 consists of an elongated handle 5, which runs approximately parallel to the longitudinal direction of the rasp shaft 9 and is slightly offset to the side. It runs down into a coupling part 6, which accordingly the oblique direction of the pin 4 obliquely with respect to Handle 5 of the handle part and the shaft 9 of the rasp 1 runs. The angle between the pin 4 and the coupling part 6 on the one hand and the longitudinal direction of the rasp shaft 9 and the handle 5 of the handle part 2, on the other hand, corresponds to the CCD angle the associated prosthesis and therefore lies in the same On the order of magnitude as usual CCD angles. The coupling part 6 contains a bore 7 which receives the pin 4 suitably. The diameter of the bore 7 is slightly larger than that of the pin 4 so that it can be easily inserted into the bore lets, but still a good clutch guide is.

Am oberen Ende trägt der Griffteil 2 einen Amboß 8, der ober- und unterseitig Schlagflächen bildet zum Ein- und Ausschlagen des Raspelschafts 9 aus dem Knochen.At the upper end of the handle part 2 carries an anvil 8, the top and Striking surfaces on the underside form for driving in and out the rasp shaft 9 from the bone.

Zum Arretieren des Zapfens 4 in der Bohrung 7 dient der Stab 10, der im Kupplungsteil 6 des Griffteils 2 in fluchtenden Bohrungen 11, 12 oberhalb und unterhalb der Bohrung 7 geführt ist. Oberhalb des Kupplungsteils 6 im Bereich des Griffs 5 liegt er, wie bei 13 durch Querschnittsdarstellung angedeutet, in einer nach außen offenen Nut 14 des Griffs. Sein oberes Ende ist bei 15 eingeschraubt in einen Schieber 16, der zwischen den Flanken 17,18 einer Grifföffnung 19 in Längsrichtung des Griffs 5 geführt ist. Der Schieber 16 bildet die Handhabe zur Längsverschiebung des Stabs 10. Der Zapfen 4 der Raspel 1 enthält eine im eingesetzten Zustand mit den Bohrungen 11,12 fluchtende Zapfenbohrung 20. In der in Fig. 2 dargestellten Stellung ragt das untere Ende des Stabs 10 durch diese Bohrung 20 und arretiert ihn dadurch in der Bohrung 7. Er ist in der Lage, beträchtliche Kupplungskräfte aufzunehmen, da er oberhalb und unterhalb des Zapfens 4 in den Bohrungen 11,12 geführt ist. Dabei ist der Zapfen 4 auch gegen Drehung gesichert, so daß Kräfte nicht nur in Längsrichtung, sondern auch rotativ vom Griffteil 2 auf den Schaft 9 der Raspel 1 übertragen werden können. Dennoch kann es zweckmäßig sein, zusätzlich eine Drehsicherung vorzusehen, die in Fig. 2 angedeutet ist als Vorsprung 21 am unteren Ende des Kupplungsteils 6, der eingreift in eine Sackbohrung 22 in der Fläche 3 der Raspel 1. Der Vorsprung 21 und die Bohrung 22 sind exzentrisch zu den Zapfen 4 bzw. der Bohrung 7 gelegen.The rod serves to lock the pin 4 in the bore 7 10, which is in alignment in the coupling part 6 of the handle part 2 Bores 11, 12 out above and below the bore 7 is. Above the coupling part 6 in the area of the handle 5 it is, as indicated by cross-sectional representation at 13, in an outwardly open groove 14 of the handle. His top The end is screwed into a slide 16 at 15 between the flanks 17, 18 of a handle opening 19 in the longitudinal direction of the handle 5 is guided. The slider 16 forms the Handle for longitudinal displacement of the rod 10. The pin 4 of the Rasp 1 contains one in the inserted state with the holes 11, 12 aligned pin bore 20. In the shown in Fig. 2 Position extends through the lower end of the rod 10 this bore 20 and thereby locks it in the bore 7. It is able to absorb considerable coupling forces since he is above and below the pin 4 in the holes 11.12 is performed. The pin 4 is also against Secured rotation so that forces not only in the longitudinal direction, but also rotating from the handle part 2 to the shaft 9 of the Rasp 1 can be transferred. Still, it can be useful be additionally provided with a rotation lock, which is shown in FIG is indicated as a projection 21 at the lower end of the coupling part 6, which engages in a blind hole 22 in the Surface 3 of the rasp 1. The projection 21 and the bore 22 are located eccentrically to the pin 4 or the bore 7.

Will man die in Fig. 2 geschlossen dargestellte Kupplung lösen, so zieht man den Stab 10 mittels des Schiebers 16 nach oben, bis er die Bohrung 20 des Zapfens 4 verlassen hat. Der Griffteil 2 kann dann von der Raspel 1 leicht abgenommen werden.If the clutch shown in FIG. 2 is to be released, so you pull the rod 10 by means of the slider 16 up until it has left the bore 20 of the pin 4. Of the Handle part 2 can then be easily removed from the rasp 1.

Damit der Schieber 16 nicht ungewollt die Arretierstellung bzw. die gelöste Stellung verlassen kann, ist er mit einer Rasteinrichtung versehen. An dem Schieber 16 ist ein Auslöser 23 um den Schwenkpunkt 24 gelagert und durch eine Feder 25 im Gegenuhrzeigersinn beaufschlagt, so daß sein in der Zeichnung rechts gelegener Rücken sich an der Flanke 18 der Grifföse 19 anlegt. Er trägt dort einen Vorsprung 26, der mit einer Rastöffnung 27 zusammenwirkt, die die Arretierstellung bezeichnet. Gewünschtenfalls kann noch eine weitere Rastöffnung 28 vorgesehen werden, die der gelösten Stellung zugeordnet ist. Will der Arzt die Kupplung lösen, so braucht er lediglich mit dem Finger unterhalb des Schiebers 16 durch die Grifföse zu greifen und den Finger nach oben zu ziehen, wobei der Auslöser 23 gegen die Federkraft in den Schieber 16 gedrückt wird, bis der Vorsprung 26 die Rastöffnung 27 verläßt und der Schieber 16 samt dem Stab 10 nach oben gleiten kann. Zum Schließen der Kupplung verfährt man umgekehrt. So that the slide 16 does not inadvertently the locking position or can leave the released position, he is with a Provide locking device. There is a trigger on the slide 16 23 mounted around the pivot point 24 and by a spring 25 in Counterclockwise applied so that its in the drawing back on the right on the flank 18 of the grommet 19 creates. There he carries a projection 26, which has a latching opening 27 interacts, which denotes the locking position. If desired, a further latching opening 28 can be made be provided, which is assigned to the released position. If the doctor wants to release the coupling, all he needs to do is join the finger below the slider 16 through the handle eyelet grab and pull your finger up, taking the trigger 23 is pressed against the spring force in the slide 16, until the projection 26 leaves the latching opening 27 and the Slider 16 together with the rod 10 can slide upwards. To the The coupling is reversed.

Die Bohrung 12 ist nach unten hin offen. Der Stab 10 ist in seiner Stirnfläche mit einem Schraubenzieherschlitz 29 oder dergleichen versehen, um den Ansatz eines Werkzeugs zu ermöglichen, mit dessen Hilfe seine Verschraubung 15 mit dem Schieber 16 gelöst wird. Der Stab 10 und der Schieber 16 können dann leicht zu Reinigungszwecken von dem Griffteil 2 getrennt werden.The bore 12 is open at the bottom. The rod 10 is in its end face with a screwdriver slot 29 or provided the like in order to enable the attachment of a tool, with the help of his screw 15 with the Slider 16 is released. The rod 10 and the slider 16 can then easily separated from the handle part 2 for cleaning purposes become.

Claims (2)

Chirurgisches Instrument bestehend aus einem in den Markraum des proximalen Oberschenkelknochens einzusetzenden Schaft (9) und einem Griffteil (2), der etwa parallel zur Richtung des Schafts (9) mit dessen oberen Ende mittels beiderseitiger Kupplungsteile lösbar verbindbar ist, die einen vom oberen Schaftende (3) schräg zur Seite vorragenden zapfen (4) und am Griffteil (2) eine den Zapfen (4) aufnehmende Bohrung (7) mit lösbaren Mitteln zum Arretieren des Zapfens (4) in der Bohrung (7) umfassen, die von dem Ende eines in Längsrichtung des Griffteils (2) beweglich geführten Stabs (10) und einer dieses Ende aufnehmenden Ausnehmung (20) in dem Zapfen (4) gebildet sind, dadurch gekennzeichnet, daß das obere Ende des Stabs (10) mit einer Handhabe (16) verbunden ist, die mit einer Rasteinrichtung (23-27) zur Sicherung des Stabs in der Arretierstellung versehen ist, wobei die Ausnehmung in dem Zapfen (4) eine durchgehende Bohrung (20) ist und der Stab (10) in seiner Arretierstellung beiderseits des Zapfens (4) in der Führungsbohrung (11,12) gehalten ist.Surgical instrument consisting of one in the medullary canal of the proximal femur Shaft (9) and a handle part (2) that is approximately parallel to the direction of the shaft (9) with its upper end by means of coupling parts on both sides releasably connectable is the one from the upper shaft end (3) obliquely to the side protruding pin (4) and on the handle part (2) the Pin (4) receiving bore (7) with detachable means for locking the pin (4) in the bore (7), that of the end of one in the longitudinal direction of the handle part (2) movably guided rod (10) and one of these End receiving recess (20) in the pin (4) are formed, characterized in that the upper end the rod (10) is connected to a handle (16), which with a locking device (23-27) to secure the Rod is provided in the locking position, the Recess in the pin (4) a through hole (20) and the rod (10) in its locking position on both sides of the pin (4) in the guide hole (11,12) is held. Instrument nach Anspruch 1, dadurch gekennzeichnet, daß der Stab (10) oberhalb des Kupplungsteils (6) offen an der Seite des Griffteils (2) geführt ist.Instrument according to claim 1, characterized in that the rod (10) above the coupling part (6) open the side of the handle part (2) is guided.
EP99107504A 1998-04-28 1999-04-14 Instrument comprising a shaft for insertion into the medullary canal and a handle Expired - Lifetime EP0956824B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29807671U DE29807671U1 (en) 1998-04-28 1998-04-28 Surgical instrument
DE29807671U 1998-04-28

Publications (2)

Publication Number Publication Date
EP0956824A1 true EP0956824A1 (en) 1999-11-17
EP0956824B1 EP0956824B1 (en) 2004-03-17

Family

ID=8056425

Family Applications (1)

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EP99107504A Expired - Lifetime EP0956824B1 (en) 1998-04-28 1999-04-14 Instrument comprising a shaft for insertion into the medullary canal and a handle

Country Status (5)

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US (1) US6187006B1 (en)
EP (1) EP0956824B1 (en)
JP (1) JPH11332869A (en)
DE (2) DE29807671U1 (en)
ES (1) ES2217641T3 (en)

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EP1459686A3 (en) * 2003-02-04 2004-12-08 Zimmer Technology, Inc. Apparatus for performing a minimally invasive total hip arthroplasty
US7833275B2 (en) 2000-04-26 2010-11-16 Zimmer Technology, Inc. Method and apparatus for performing a minimally invasive total hip arthroplasty
US8157808B2 (en) 2005-09-09 2012-04-17 Waldemar Link Gmbh & Co. Kg Insertion instrument for an endoprosthesis comprising a prosthesis shaft which is to be inserted into a medullary cavity

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ATE444022T1 (en) * 2003-11-18 2009-10-15 Smith & Nephew Inc SURGICAL TECHNIQUE AND INSTRUMENTS FOR MINIMAL INCISION HIP ARTHOPLASTY SURGERY
US8657824B2 (en) 2003-11-18 2014-02-25 Smith & Nephew, Inc. Universal double offset surgical instrument
US20050203539A1 (en) * 2004-03-08 2005-09-15 Grimm James E. Navigated stemmed orthopaedic implant inserter
US20080033444A1 (en) * 2006-03-06 2008-02-07 Howmedica Osteonics Corp. Compound offset handle
US7935125B2 (en) * 2006-03-06 2011-05-03 Howmedica Osteonics Corp. Compound offset handle
US20070225725A1 (en) * 2006-03-21 2007-09-27 Zimmer Technology, Inc. Modular acetabular component inserter
US7909882B2 (en) * 2007-01-19 2011-03-22 Albert Stinnette Socket and prosthesis for joint replacement
US8317845B2 (en) * 2007-01-19 2012-11-27 Alexa Medical, Llc Screw and method of use
JP5191320B2 (en) * 2008-09-02 2013-05-08 京セラメディカル株式会社 Brooch handle
EP2674116B1 (en) 2012-06-11 2014-08-06 Waldemar Link GmbH & Co. KG Tool holding and gripping part for a medical tool, in particular a surgical tool
KR101629275B1 (en) * 2014-10-07 2016-06-10 김남복 Osteotome for cutting of Zygomatic Arch
US20200197065A1 (en) * 2018-12-25 2020-06-25 Ren-Hong Huang Surgical device and surgical impactor thereof

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US7833275B2 (en) 2000-04-26 2010-11-16 Zimmer Technology, Inc. Method and apparatus for performing a minimally invasive total hip arthroplasty
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US8157808B2 (en) 2005-09-09 2012-04-17 Waldemar Link Gmbh & Co. Kg Insertion instrument for an endoprosthesis comprising a prosthesis shaft which is to be inserted into a medullary cavity

Also Published As

Publication number Publication date
DE59908840D1 (en) 2004-04-22
DE29807671U1 (en) 1999-09-02
ES2217641T3 (en) 2004-11-01
EP0956824B1 (en) 2004-03-17
US6187006B1 (en) 2001-02-13
JPH11332869A (en) 1999-12-07

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